"He (Manmohan Singh) said Narendra Modi becoming prime minister would be disastrous. I want to say Modi in his tenure has made Gujarat a model state...," Bharatiya Janata Party (BJP) President Rajnath Singh said.

"Such a a comment on him (Modi) is laughable," he said.

"Whatever happened in 2002 is sad, but when SIT (Special Investigation Team) and court have given him a clean chit, such statement is unfortunate," he added.